<template>
  <div>
    <h3>AddItem组件</h3>
    <p>已知库存数: {{ $store.state.count }}</p>
    <button @click="addFn">库存+1</button>
  </div>
</template>

<script>
export default {
  methods: {
    addFn() {
      this.$store.commit('addCount', 1)
    },
  },
}
</script>
